Method and apparatus for predicting vehicle rollover during a trip-over event
US8073597B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 24, 2009 |
| Grant date | Dec 6, 2011 |
| Priority date | — |
| Expiry date | Jul 2, 2030 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60R2021/01327
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A vehicle includes wheels, force sensors adapted for a vertical force and lateral force of each wheel, an onboard device, and a controller. The controller calculates vehicle values using the vertical force and lateral force, compares the values to a corresponding threshold, and automatically deploys the device when each element value does not exceed a corresponding threshold. A method for determining when to deploy an airbag includes measuring a vertical and lateral force at each wheel, and measuring a yaw rate and roll angle. A lateral velocity is calculated using the lateral force, and a lift of each wheel is calculated using the vertical force. The roll angle, roll rate, and stopping time are processed to generate a point on a 3D rollover plane. A rollover energy rate is calculated, and the airbag deploys when the point, rollover energy rate, and lift do not exceed a threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.